    required_properties = set([
        '_data_store',
        '_check_type',
        '_spec_property_naming',
        '_path_to_item',
        '_configuration',
        '_visited_composed_classes',
        '_composed_instances',
        '_var_name_to_model_instances',
        '_additional_properties_model_instances',
    ])

{{> python-experimental/model_templates/method_init_shared }}

        constant_args = {
            '_check_type': _check_type,
            '_path_to_item': _path_to_item,
            '_spec_property_naming': _spec_property_naming,
            '_configuration': _configuration,
            '_visited_composed_classes': self._visited_composed_classes,
        }
        required_args = {
{{#requiredVars}}
            '{{name}}': {{name}},
{{/requiredVars}}
        }
        # remove args whose value is Null because they are unset
        required_arg_names = list(required_args.keys())
        for required_arg_name in required_arg_names:
            if required_args[required_arg_name] is nulltype.Null:
                del required_args[required_arg_name]
        model_args = {}
        model_args.update(required_args)
        model_args.update(kwargs)
        composed_info = validate_get_composed_info(
            constant_args, model_args, self)
        self._composed_instances = composed_info[0]
        self._var_name_to_model_instances = composed_info[1]
        self._additional_properties_model_instances = composed_info[2]
        unused_args = composed_info[3]

        for var_name, var_value in required_args.items():
            setattr(self, var_name, var_value)
        for var_name, var_value in six.iteritems(kwargs):
            if var_name in unused_args and \
                        self._configuration is not None and \
                        self._configuration.discard_unknown_keys and \
                        not self._additional_properties_model_instances:
                # discard variable.
                continue
            setattr(self, var_name, var_value)